is 2 12817759 - 1
has 3858530 decimal digits
takes 5.236 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP384C037A48FF4638verified PRP

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2672.318264.1791%40000042845985014.05019.9971%16.368367.7602%3.5811%
PrimeNet2640.277762.5000%6000017000000.08854.3284%0.366164.1231%1.6231%
GPU722684.650264.7059%9000024000000.12783.1623%4.778065.8220%1.1161%
Difference-1-2.3320-0.5268%+310000+426059850+13.9223+6.8349%+11.5903+1.9382%+1.9382%

Known prime factors (3 factors, 102.0 bits, 0.00079558% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
12817759820336577929.61232
25
-32325.618e-121.895e-53.857e-5
12817759338388837611134.9781320
23 × 3 × 5 × 11
2008-09-088112.296e-104.835e-69.643e-6
128177591795511680731237.3867004
22 × 17 × 103
2008-09-08171032.166e-91.284e-52.049e-5

4 Composite Factors:
exponentprime factorscomposite factordigitsbits*
12817759277592740739996260972064.590
128177591472923906133565061212166.997
1281775960758111055740213625532272.364
12817759498421008484517830468160400108131101.975
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2022-04-21T06:51:57nordisweet16_30.8b14400000400000-
skipped known factor: 820336577
skipped known factor: 33838883761
skipped known factor: 179551168073
--0.237--2.429%
2022-05-12T00:17:28nordisweet16_30.8b14400000428459850-
skipped known factor: 820336577
skipped known factor: 33838883761
skipped known factor: 179551168073
--14.05--9.997%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2008-09-08T08:39:00Will EdgingtonManual testing??37.386127.37099e-1010.931.53911e-9
2008-09-08T08:39:00Will EdgingtonManual testing??34.978115.10156e-1110.931.06524e-10


ECM factoring results:
No ECM results for M12817759


Lucas-Lehmer results:
No L-L results for M12817759


PRP results:
dateuseridcompidcofactorsres64PRP
2022-05-13T17:55:29XZT3050Micro3
820336577
33838883761
179551168073
384C037A48FF4638no


P-1 factor-bounds graph:
B1 = 400000, B2 = 428459850 (P-1 stage 2)
B1 = 400000 (P-1 stage 1)
100
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100
101
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109
TF factor-bounds graph:
267
2
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2100
Last modified: 2022-05-13T17:55:29+00:00